/// <summary>
/// Initializes a new instance of the <see cref="VertexBufferBinding"/> struct.
/// </summary>
/// <param name="vertexStride">Jump size to the next element. if -1, it gets auto-discovered from the vertexDeclaration</param>
/// <param name="vertexOffset">Offset (in Vertex ElementCount) from the beginning of the buffer to the first vertex to use.</param>
public VertexBufferBinding(Buffer vertexBuffer, VertexDeclaration vertexDeclaration, int vertexCount, int vertexStride = -1, int vertexOffset = 0) : this()
{
if (vertexBuffer == null)
{
throw new ArgumentNullException("vertexBuffer");
}
if (vertexDeclaration == null)
{
throw new ArgumentNullException("vertexDeclaration");
}
Buffer = vertexBuffer;
Stride = vertexStride != -1 ? vertexStride : vertexDeclaration.VertexStride;
Offset = vertexOffset;
Count = vertexCount;
Declaration = vertexDeclaration;
unchecked
{
hashCode = Buffer.GetHashCode();
hashCode = (hashCode * 397) ^ Offset;
hashCode = (hashCode * 397) ^ Stride;
hashCode = (hashCode * 397) ^ Count;
hashCode = (hashCode * 397) ^ Declaration.GetHashCode();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="VertexBufferBinding"/> struct.
/// </summary>
/// <param name="vertexBuffer">The buffer containing the vertices.</param>
/// <param name="vertexDeclaration">A <see cref="VertexDeclaration"/> specifying tha layout of the vertices.</param>
/// <param name="vertexCount">The number of vertices.</param>
/// <param name="vertexStride">
/// Number of bytes to advance to get to the next vertex.
/// If -1, it gets auto-discovered from the <paramref name="vertexDeclaration"/>.
/// </param>
/// <param name="vertexOffset">
/// Offset (in Vertex ElementCount) from the beginning of the buffer to the first vertex to use.
/// </param>
public VertexBufferBinding(Buffer vertexBuffer, VertexDeclaration vertexDeclaration, int vertexCount, int vertexStride = -1, int vertexOffset = 0) : this()
{
Buffer = vertexBuffer ?? throw new ArgumentNullException(nameof(vertexBuffer));
Declaration = vertexDeclaration ?? throw new ArgumentNullException(nameof(vertexDeclaration));
Stride = vertexStride != -1 ? vertexStride : vertexDeclaration.VertexStride;
Offset = vertexOffset;
Count = vertexCount;
HashCode hash = default;
hash.Add(Buffer.GetHashCode());
hash.Add(Offset);
hash.Add(Stride);
hash.Add(Count);
hash.Add(Declaration.GetHashCode());
hashCode = hash.ToHashCode();
}
